Is Storyboard Good?

I've been trying to combine navigation and tab bar together into my app, but I'm a beginning programmer, and it seems to tedious to me and confusing

what are the pros and cons of storyboard vs coding everything manually.

with the dissapearence of the main window.xib its very hard for me to understand, i know how to manually make the main window.xib but i really have no clue what to do after i make it, and how i connect it to to my 4 view controllers that are tabs in my tab app, and than implement nav controller to one or all of the views (initially i juz needed it on one, but as i add more features I'm likely to need nav controller on each view controller)

so i decided to go the storyboard way and do as little coding as possible.